This image shows NASA's Cassini spacecraft's imaging science subsystem visible-light mosaic of Mimas from previous flybys on the left. The right-hand image shows new infrared temperature data mapped on top of the visible-light image.

This image, combining data from the imaging science subsystem and composite infrared spectrometer aboard NASA's Cassini spacecraft, shows pockets of heat appearing along one of the mysterious fractures in the south polar region of Saturn's moon Enceladus